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- Discussion
Introducing System One Models and Jev (Hacker News launch thread)
The 1,863-point, 490-comment launch thread. Top comments argue the frontier-model framing is misleading, dispute the cannot-hallucinate claim on the grounds that type safety is not factual correctness, and note grammar-constrained decoding on ordinary LLMs already covers much of the interface.
- Discussion
does Jev understand colour? (X)
A short video demo asking whether Jev understands colour, posted by generative artist Matt DesLauriers, who calls the model a leap forward for building new UX and UI paradigms on top of language models.
Matt DesLauriers (@mattdesl)Opendoes Jev understand colour? (X) on x.com - Discussion
TypeSafe SDK: Jev, the first System One model (Elixir Forum)
Elixir Forum thread (8 replies, 281 views) announcing an Elixir SDK for Jev with strict noul/choice/score constructors and evaluate/evaluate_many/streaming. Notes five independent Elixir Jev clients appeared in the same launch week.
- Discussion
jev is the best excuse you could possibly have to go re-read 12 factor agents
Argues tool calling decomposes into classify plus action, and that pipelines switching between classification, structuring, deterministic code, and small agent loops make Jev a useful building block.
Dex Horthy (@dexhorthy)Openjev is the best excuse you could possibly have to go re-read 12 factor agents on x.com - Discussion
Jev Ultrafast: A browser agent with a dynamic action space (HN)
86-point, 12-comment thread on browser-use's agent. Commenters dispute the 7.1s Google Flights timing because timing starts after initial page observation, report demo failures, and object to paying per call for a cloud decision model.
- Discussion
Open-sourced jev architecture last year with model, paper and dataset (HN)
36-point, 9-comment priority claim: the poster says he published a non-autoregressive, schema-constrained probability model in March 2025 (arXiv 2503.23303) using PPO over sequence embeddings rather than a parallel sampler. Commenters reply that the difference was marketing reach, not the idea.